VDR

Definition: 
Vessel Discharge Ration
Subject Area 1: 
Drilling & Operations
Remarks: 
Vessel Discharge Ration (VDR): the total calculated volume (TCV) by the vessel measurement on arrival, less remaining on-board (ROB), divided by the TCV by shore measurement at discharge. VDR = (TCV on arrival – ROB) / TCV received from shore at discharge